tqchen commented on a change in pull request #9533:
URL: https://github.com/apache/tvm/pull/9533#discussion_r752626980
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File path: src/relay/ir/expr.cc
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@@ -71,6 +71,29 @@ Tuple::Tuple(tvm::Array<relay::Expr> fields, Span span) {
data_ = std::move(n);
}
+Tuple Tuple::WithFields(Optional<Array<Expr>> opt_fields, Optional<Span>
opt_span) {
+ Array<Expr> fields = opt_fields.value_or(get()->fields);
Review comment:
I see, it might be worth thinking a bit about the tradeoff since the
original semantics on the python and c++ side is WithAttr do not mutate the
original value that is passed in(unless it is moved in and ensures that there
is no followup).
Since a common usage pattern may ends up look like this:
```python
x = PrimFunc(args, body)
# y is a new copy that comes with a new attr
# x remains as the original case
y = x.with_attr("new_attr", value)
record([x, y])
```
If it is a mution semantics, then we might want to rename it as SetXYZ, like
Array.Set
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